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Three-Dimensional Particle Shape Analysis Using X-ray Computed Tomography: Experimental Procedure and Analysis Algorithms for Metal Powders
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基于金属激光的粉末床融合工艺开发,使用光学断层扫描.

Roy Björkstrand1, Jan Akmal1,2, Mika Salmi1

  • 1Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Espoo, Finland.

Materials (Basel, Switzerland)
|April 13, 2024
PubMed
概括

光学断层扫描仪监测316L不钢激光粉床融合过程中的光辐射. 这种方法有助于识别关键缺陷,加速增材制造参数的开发.

科学领域:

  • 材料科学 材料科学 材料科学
  • 制造业 工程 制造工程
  • 添加剂制造 添加剂制造 添加剂制造

背景情况:

  • 316L不钢是增材制造中常见的材料.
  • 激光粉床融合 (LPBF) 是一种关键的增材制造工艺.
  • 优化过程参数对于无缺陷组件至关重要.

研究的目的:

  • 调查光学断层扫描 (OT) 数据和微图分析之间的相关性.
  • 评估OT在LPBF现场监测和缺陷检测方面的潜力.
  • 为专门的增材制造应用展示参数工程.

主要方法:

  • 使用LPBF添加制造的316L不钢样品.
  • 多种激光扫描速度和激光功率作为过程参数.
  • 使用光学断层扫描监测过程排放.
  • 使用光学显微镜检测缺陷 (缺乏融合,多孔性) 的分析显微镜.

主要成果:

  • 建立了OT灰色值和关键缺陷存在之间的相关性.
  • 在OT灰色值中确定了一个值,超过这个值后,缺陷数量会增加.
  • 证明OT可以部分独立地用于过程参数开发.
关键词:
通过3D打印打印3D打印.添加剂制造 添加剂制造 添加剂制造参数工程是指参数的工程.过程监控过程监控过程监控不钢不钢的使用方法

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结论:

  • 光学断层扫描是对LPBF过程的现场监测的一个有价值的工具.
  • OT数据可以帮助快速开发和优化过程参数.
  • 这种方法支持针对工业需求的敏捷,特定组件的参数开发.